In Greek mythology, Medusa ("cunning queen"), was the only mortal of the three Gorgon sisters. The gorgons, Medusa, Stheno, and Euryale, were vicious female monsters with brass hands, sharp fangs and hair of living, venomous serpents. Medusa's cheeks puffed out, and her tongue lolled between her fangs. She was literally petrifying to look upon: every creature who saw her was turned to stone!